1. Product Description & Purpose

️· What it is: The LPD is a phase angle meter. It measures the phase difference between two AC voltage signals.
️· Operation: It can operate in two modes, indicated by "Negative in Lag, Positive in Lead" or "Negative in Lead, Positive in Lag," dictating the output polarity based on the phase relationship. If there's no input voltage, the transducer outputs as negative (–) overrange.

2. Technical Specifications

️· Input: Designed for AC voltage measurements.
️· Operating Voltage:
- AC: 85-150 V or rating -15/+10 %, 50/60 Hz. Consumes approximately 2 VA.
- DC: Rating ±10% or 85 – 150 V; Consumes approximately 2 W.
️· Measurement Range (Outputs):
- DC Current Output: -10 to +20 mA. Span: Min. 1 mA, max. 20 mA. Offset: Max. 3 mA (1.5 times span).
- DC Voltage Output: -10 to +12 V DC. Minimum span: 5 mV. Offset: Max. 3 V (1.5 times span).
️· Accuracy: ±2% (at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)
️· Response Time: ≤ 2 seconds (0 – 100%)
️· Ripple: 0.5%p-p max.
️· Line Voltage Effect: ±0.1% over the voltage range.
️· Insulation Resistance: ≥ 100 MΩ with 500 V DC.
️· Dielectric Strength: 2000 V AC @ 1 minute.
️· Impulse Withstand Voltage: ±5 kV (1.2 / 50 μs)
️· Environmental:
- Operating Temperature: -10 to +55°C (14 to 131°F)
- Operating Humidity: 30 to 85% RH (non-condensing)
️· Physical:
- Weight: 450 g (0.99 lb)
- Mounting: Surface or DIN rail. Allows for close mounting of units.

3. Connection & Operation

️· Input Terminals: 1, 2, 3, 4 (A1, A2, B1, B2).
- Terminals 1 & 4: Used for measuring line voltages.
- Terminals 2 & 5: Used for measuring phase voltages.
️· Output Terminals: Provides DC voltage and current outputs.
️· Auxiliary Power: Provides power to the unit.

4. Ordering/Configuration (Implied, Not Explicitly Detailed)

️· The LPD's configuration seems to be defined by the operating mode ("Negative in Lag, Positive in Lead" or "Negative in Lead, Positive in Lag"), which would likely be specified when ordering. No part numbers are provided.
️· Configuration will be determined by the required output type (DC Voltage or DC Current)

Key Takeaways

️· The LPD is a relatively compact and robust phase angle meter.
️· It offers both current and voltage output options for easy integration into control systems.
️· It is designed for a range of industrial environments.
️· Configuration depends on the specific application and desired operation.